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Greg, Import tech

Category: Lexus

Satisfied Customers: 6808

Experience: 17 year shop owner

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The mechanic replaced the front accumulators suspension on

Customer Question

Hi, the mechanic replaced the front accumulators for the suspension on my LX470. The SUV now won't go up higher than the N setting. It will lower to L and raise to N, but when going to H it will raise the rear, try to raise the front, the front won't completely raise and it will go automatically down to N. The front was bled. The rear wasn't.

You now need to reset the system with the Scan tool in suspension systems .

The height control sensors may need adjusting .

Fluid level to low .most common issue for your problem .

Accumulator solenoid malfunction .

System may need bleeding again.

Please get back if this has been checked..

Please remember to only rate my answer when you are 100% satisfied.

IF you feel the need to click either "Helped a little" or "I expected more",please stop and reply to me via the CONTINUE CONVERSATION button with the issue you have.I will be happy to continue further and do everything I can to provide you with the service you seek.

I don't think any if these are the solution. Here's a more detailed explanation: I can see that the front does NOT raise fully to the H level: Complete process: I hit the Raise button, the H light starts to blink showing that it is raising, the rear starts to raise first and raises completely, then the front starts and it raises a little, but not enough. After a few seconds of not rising enough (about 20 seconds) the sensors notice it, the N light blinks, both front and read lower to the N level again, the N stays solid.

Customer:replied 1 year ago.

I don't think any if these are the solution. Here's a more detailed explanation: I can see that the front does NOT raise fully to the H level: Complete process: I hit the Raise button, the H light starts to blink showing that it is raising, the rear starts to raise first and raises completely, then the front starts and it raises a little, but not enough. After a few seconds of not rising enough (about 20 seconds) the sensors notice it, the N light blinks, both front and rear lower to the N level again, the N stays solid.

I bled the system.The sensor data compares with vehicle height (numbers increase as the vehicle rises). I sent you the screenshots to see if you can notice anything out of the ordinary. All streaming data from the vehicle looked perfect and there weren't any errors.Anything else that I may try???

Customer:replied 1 year ago.

I mean, yes we bled it again. This time in all four shocks.

Customer:replied 1 year ago.

A mechanic suggested that I replace the accumulators. I'm going to order them and try that if you don't have any other ideas.

Customer:replied 1 year ago.

You mentioned that the height control sensors may need adjusting. Question: How are the height control sensors adjusted?

The ride on the vehicle had become very rigid. I had read that replacing the accumulators would fix that, and it did. It made a heck of a difference. Now the front suspensions is as it should be. The rear feels more rigid than the front now. (The from felt very rigid before replacing them).

Okay good this is correct, when the suspension get rock hard the Accumulators are bad and is normal to replace all four then bleed the system, expensive item i know but better to replace all four as the membrane inside collapse..

But as said will get back to you later on in the day with more information .

Let me ask you: I noticed that the height indicated on the pics I sent you were different for the rear and front heights on LO and N. However the vehicle adjusted front and rear heights automatically perfectly and without any issues. QUESTION: Does it matter that the height shown by the sensors is different?

No, the first two pics (LO and N) were taken with the vehicle stable and level. And in these pics the ride heights on the screen are very different for front and rear even though the vehicle is perfectly flat.

My question is, why would it work for LO and N if it is not reading correctly?Also, when going into H I can see that the front is moving up, but slowly and the system goes back into N before the front reaches the correct height. I wonder why that happens.

The parts I ordered (the rear accumulators) were installed and it fixed the problem right away. I thank you for your effort, but none of your suggestions was the cause of the problem. Keep the solution in mind in case you run into a similar issue.